Trying to use PySerial, get the following:

Windows 7 32-bit, Python 2.7.3, PySerial installed by pyserial-2.5.win32.exe

Trying to use PySerial, get the following:

>>> import serial
Traceback (most recent call last):
File "<interactive input>", line 1, in <module>
File "F:\Python27\lib\site-packages\serial\__init__.pyw", line 19,
in <module> from serialwin32 import *
File "F:\Python27\lib\site-packages\serial\serialwin32.pyw", line 11,
in <module> import ctypes
File "F:\Python27\lib\ctypes\__init__.py", line 10, in <module>
from _ctypes import Union, Structure, Array
ImportError: No module named _ctypes
>>>

serial, and ctypes are listed as install modules.
The exe installed the folder ctypes in a sub-folder of Python 27\Lib,
and the folder serial in Python\Lib\site-packages.

>>> import sys

>>> print sys.path

['',
'C:\\Windows\\system32\\python27.zip',
'F:\\Python27\\DLLs',
'F:\\Python27\\lib',
'F:\\Python27\\lib\\plat-win',
'F:\\Python27\\lib\\lib-tk',
'F:\\Python27\\Lib\\site-packages\\pythonwin',
'F:\\Python27',
'F:\\Python27\\lib\\site-packages',
'F:\\Python27\\lib\\site-packages\\win32',
'F:\\Python27\\lib\\site-packages\\win32\\lib']

>>>

I've searched with Google, and the forums, and found nothing of any help.

I just tried python 2.4 on a windows computer.

import ctypes
import sys
print(sys.modules)

...
_ctypes.pyd is in site-packages.



Although in recent pythons ctypes is part of the distribution. Should be, at least.

on linux system
python2.7/lib-dynload/_ctypes.so

reinstall your python?

Thanks for your answer. I will investigate that.

I have found that, when one program attempts to import another program, it invariably fails.
Since I seem to be the only one who has problems with these (downloaded) programs , I am inclined to think that it may have something to do with a path setting,.

As a Python beginner, I may have a bad setting.

Maybe someone could look at my path settings, listed in my first post?

[QUOTE=b49P23TIvg

Although in recent pythons ctypes is part of the distribution.
reinstall your python?[/QUOTE]

Good call, thanks.

I finally got time to uninstall, and reinstall Python, and all packages. I also realized that my directory structure was "less than optimal".

Now that problem is solved, and now I have a couple of new ones but, since they are different, I will make a new thread if I can't solve them.